Tainted Aether
Enchantment
Whenever a creature enters, its controller sacrifices a creature or land of their choice.
Pockets of Æther can be so foul they melt flesh from bone.
Ciruelo
Seventh Edition (7ED)
• #167★Rulings
If more than one of these is on the battlefield, the controller sacrifices a creature for each one of these.
(wotc • 2004-10-04)
If the controller has no other lands or creatures on the battlefield, they must sacrifice the creature that just entered.
(wotc • 2004-10-04)
Tainted Aether's controller is the one that controls its triggered ability, but the controller of the creature that entered chooses what creature they sacrifice during resolution.
(wotc • 2004-10-04)
If the creature changes controllers before this ability resolves, its new controller has to sacrifice something.
(wotc • 2004-10-04)
Rulings
If more than one of these is on the battlefield, the controller sacrifices a creature for each one of these.
(wotc • 2004-10-04)
If the controller has no other lands or creatures on the battlefield, they must sacrifice the creature that just entered.
(wotc • 2004-10-04)
Tainted Aether's controller is the one that controls its triggered ability, but the controller of the creature that entered chooses what creature they sacrifice during resolution.
(wotc • 2004-10-04)
If the creature changes controllers before this ability resolves, its new controller has to sacrifice something.
(wotc • 2004-10-04)